$ git clone -n https://gitee.com/lizhao2025/imath.git /var/lib/mock/dist-an23-build-496280-74608/root/chroot_tmpdir/scmroot/imath
Cloning into '/var/lib/mock/dist-an23-build-496280-74608/root/chroot_tmpdir/scmroot/imath'...
$ git fetch origin a8c2378931bfa9ac53e73c84fc0da98d78ea80b3:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/imath
 * [new ref]         a8c2378931bfa9ac53e73c84fc0da98d78ea80b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8c2378 Update code from upstream